124 lines
3.9 KiB
ReStructuredText
124 lines
3.9 KiB
ReStructuredText
openstacksdk
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============
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openstacksdk is a client library for building applications to work
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with OpenStack clouds. The project aims to provide a consistent and
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complete set of interactions with OpenStack's many services, along with
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complete documentation, examples, and tools.
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It also contains an abstraction interface layer. Clouds can do many things, but
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there are probably only about 10 of them that most people care about with any
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regularity. If you want to do complicated things, the per-service oriented
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portions of the SDK are for you. However, if what you want is to be able to
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write an application that talks to clouds no matter what crazy choices the
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deployer has made in an attempt to be more hipster than their self-entitled
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narcissist peers, then the Cloud Abstraction layer is for you.
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More information about its history can be found at
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https://docs.openstack.org/openstacksdk/latest/contributor/history.html
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openstack
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=========
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List servers using objects configured with the ``clouds.yaml`` file:
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.. code-block:: python
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import openstack
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# Initialize and turn on debug logging
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openstack.enable_logging(debug=True)
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# Initialize cloud
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conn = openstack.connect(cloud='mordred')
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for server in conn.compute.servers():
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print(server.to_dict())
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Cloud Layer
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===========
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``openstacksdk`` contains a higher-level layer based on logical operations.
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.. code-block:: python
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import openstack
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# Initialize and turn on debug logging
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openstack.enable_logging(debug=True)
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for server in conn.list_servers():
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print(server.to_dict())
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The benefit is mostly seen in more complicated operations that take multiple
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steps and where the steps vary across providers:
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.. code-block:: python
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import openstack
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# Initialize and turn on debug logging
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openstack.enable_logging(debug=True)
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# Initialize connection
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# Cloud configs are read with openstack.config
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conn = openstack.connect(cloud='mordred')
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# Upload an image to the cloud
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image = conn.create_image(
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'ubuntu-trusty', filename='ubuntu-trusty.qcow2', wait=True)
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# Find a flavor with at least 512M of RAM
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flavor = conn.get_flavor_by_ram(512)
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# Boot a server, wait for it to boot, and then do whatever is needed
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# to get a public ip for it.
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conn.create_server(
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'my-server', image=image, flavor=flavor, wait=True, auto_ip=True)
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openstack.config
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================
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``openstack.config`` will find cloud configuration for as few as 1 clouds and
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as many as you want to put in a config file. It will read environment variables
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and config files, and it also contains some vendor specific default values so
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that you don't have to know extra info to use OpenStack
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* If you have a config file, you will get the clouds listed in it
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* If you have environment variables, you will get a cloud named `envvars`
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* If you have neither, you will get a cloud named `defaults` with base defaults
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Sometimes an example is nice.
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Create a ``clouds.yaml`` file:
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.. code-block:: yaml
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clouds:
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mordred:
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region_name: Dallas
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auth:
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username: 'mordred'
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password: XXXXXXX
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project_name: 'shade'
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auth_url: 'https://identity.example.com'
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Please note: ``openstack.config`` will look for a file called ``clouds.yaml``
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in the following locations:
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* Current Directory
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* ``~/.config/openstack``
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* ``/etc/openstack``
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More information at https://docs.openstack.org/openstacksdk/latest/user/config/configuration.html
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Links
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=====
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* `Issue Tracker <https://storyboard.openstack.org/#!/project/openstack/openstacksdk>`_
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* `Code Review <https://review.opendev.org/#/q/status:open+project:openstack/openstacksdk,n,z>`_
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* `Documentation <https://docs.openstack.org/openstacksdk/latest/>`_
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* `PyPI <https://pypi.org/project/openstacksdk/>`_
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* `Mailing list <http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-discuss>`_
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* `Release Notes <https://docs.openstack.org/releasenotes/openstacksdk>`_
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